CN206074522U - Phased array electromagnetic acoustic device - Google Patents
Phased array electromagnetic acoustic device Download PDFInfo
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- CN206074522U CN206074522U CN201620919281.5U CN201620919281U CN206074522U CN 206074522 U CN206074522 U CN 206074522U CN 201620919281 U CN201620919281 U CN 201620919281U CN 206074522 U CN206074522 U CN 206074522U
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Abstract
The utility model discloses a kind of phased array electromagnetic acoustic device.The device includes：Signal source, for producing the pumping signal of predetermined waveform and power more than or equal to threshold value, to encourage phased array excitation electromagnetic ultrasonic transducer to produce ultrasound wave；Passage gate, is connected with signal source and phased array electromagnetic ultrasonic transducer, to connect the array element in phased array electromagnetic ultrasonic transducer；Phased array electromagnetic ultrasonic transducer, including multiple array elements, array element produce ultrasound wave and the echo in reception detected object in the presence of pumping signal to generate the testing result of detected object after being connected by passage gate.This utility model need to polish when carrying out ultrasound detection using piezoelectric transducer in solving correlation technique detected object surface, using couplant, be dfficult to apply to high temperature detection, when carrying out ultrasound detection using electromagnetic ultrasonic transducer, wide-angle oblique incidence detection relatively difficult to achieve, energy conversion efficiency are low, echo poor sensitivity, it is more difficult to for the technical problem of flaw detection.
Description
Technical field
This utility model is related to field of ultrasonic nondestructive detection, in particular to a kind of phased array electromagnetic acoustic device.
Background technology
Phased array ultra sound detection technique shows that to defect visual in image, accuracy of detection is higher, examines in industrial non-destructive
It is applied widely in survey.At present, the phased array ultra sound detection in correlation technique is mainly using piezoelectric transducer as sharp
Reception device is encouraged, instrument system is also for piezoelectric transducer design.Although piezoelectric transducer tool when ultrasound detection is carried out
Have the advantages that conversion efficiency height, detection signal signal to noise ratio are strong, but there is also needs polishing detected object surface, use to couple
Agent, the shortcoming for being dfficult to apply to high temperature detection.Particularly in automatic online detecting system, detection robot application, often
Need exploitation auxiliary workpiece polishing mechanism and water spray coupling mechanism, increased the complexity of system, also to using bring it is many not
Just.
The electromagnetic ultrasonic transducer of rising in recent years with without the need for abrasive material surface, without the need for couplant, non-contact detecting,
Suitable for the advantage of high temperature detection, many shortcomings of piezoelectric transducer can be made up.But there is electromagnetic ultrasonic transducer transducing to imitate
Rate is low, detection signal energy is weak, be not likely to produce large-scale angular deflection the shortcomings of produce oblique incidence sound wave.Therefore, it is electric at present
Magnetic ultrasound is mainly used in straight incidence thickness measuring, and echo sensitivity is low, difficult for detecting a flaw, and, being also difficult to use in needs oblique incidence
Carry out the occasion of defects detection, such as weld seam detection.
Need during for ultrasound detection being carried out using piezoelectric transducer in correlation technique polish detected object surface, use
Couplant, high temperature detection is dfficult to apply to, when ultrasound detection is carried out using electromagnetic ultrasonic transducer, wide-angle relatively difficult to achieve is oblique
Penetrate detection, energy conversion efficiency low, echo poor sensitivity, it is more difficult to for the problem of flaw detection, not yet propose at present effectively to solve
Scheme.
Utility model content
This utility model embodiment provides a kind of phased array electromagnetic acoustic device, at least to solve to utilize in correlation technique
Piezoelectric transducer carry out needing during ultrasound detection polishing detected object surface, using couplant, be dfficult to apply to high temperature detection,
When carrying out ultrasound detection using electromagnetic ultrasonic transducer, wide-angle oblique incidence detection relatively difficult to achieve, energy conversion efficiency are low, echo
Poor sensitivity, it is more difficult to for the technical problem of flaw detection.
According to the one side of this utility model embodiment, there is provided a kind of phased array electromagnetic acoustic device, including：Signal
Source, for producing the pumping signal of predetermined waveform, wherein, the power of pumping signal is more than or equal to threshold value, and pumping signal is used to swash
Encourage phased array excitation electromagnetic ultrasonic transducer and produce ultrasound wave；Passage gate, with signal source and phased array electromagnetic acoustic
Sensor connects, for connecting the array element in phased array electromagnetic ultrasonic transducer；And phased array electromagnetic ultrasonic transducer,
It is connected with passage gate, phased array electromagnetic ultrasonic transducer includes multiple array elements, it is connected by passage gate in array element
Afterwards, array element produces ultrasound wave and the echo in reception detected object in the presence of pumping signal, wherein, echo is used to give birth to
Into the testing result of detected object.
Further, passage gate is passed for connecting phased array electromagnetic acoustic with rule according to excitation set in advance
Array element in sensor.
Further, also include：Hub, is connected between passage gate and phased array electromagnetic ultrasonic transducer,
For passage gate is connected with the array element of phased array electromagnetic ultrasonic transducer.
Further, also include:Multi channel signals conditioner, is connected with phased array electromagnetic ultrasonic transducer, for hindering
Disconnected power passes through more than or equal to the pumping signal of threshold value, it is allowed to which the echo that phased array electromagnetic ultrasonic transducer is received passes through,
And process is amplified to echo.
Further, each passage of multi channel signals conditioner is made up of duplexer and preamplifier, wherein, duplexer
Pass through more than or equal to the pumping signal of threshold value for blocking power, it is allowed to the echo that phased array electromagnetic ultrasonic transducer is received
Pass through, preamplifier for being amplified process to echo.
Further, also include:Host computer, is connected with multi channel signals conditioner, for receiving multi channel signals conditioning
Echo after device process, and the testing result of detected object is generated according to the echo after process.
Further, host computer is used at least one of：The excitation in control signal source and output waveform, echo reception note
Record, signal processing, detection imaging.
Further, also include：Multi-channel signal acquiring device, is connected with multi channel signals conditioner and host computer respectively,
For being acquired to the echo after the process of multi channel signals conditioner, and it is sent to host computer.
Further, ultrasound wave and echo include at least one of respectively：Shear wave, compressional wave.
Further, detected object is conductive material or non-conducting material, wherein, the detected object of non-conducting material
Surface is provided with for encouraging the auxiliary device for producing ultrasound wave.
In this utility model embodiment, phased array electromagnetic acoustic device includes signal source, for produce predetermined waveform and
Pumping signal of the power more than or equal to threshold value, to encourage phased array excitation electromagnetic ultrasonic transducer to produce ultrasound wave；Passage is selected
Logical device, is connected with signal source and phased array electromagnetic ultrasonic transducer, to connect the battle array in phased array electromagnetic ultrasonic transducer
Unit；Phased array electromagnetic ultrasonic transducer, including multiple array elements, array element by passage gate connection after pumping signal effect
It is lower produce ultrasound wave and receive detected object in echo to generate the testing result of detected object, the phased array electromagnetism
Vltrasonic device need to polish when carrying out ultrasound detection using piezoelectric transducer in can solving correlation technique detected object surface,
Using couplant, be dfficult to apply to high temperature detection, wide-angle relatively difficult to achieve when ultrasound detection is carried out using electromagnetic ultrasonic transducer
Oblique incidence detection, energy conversion efficiency are low, echo poor sensitivity, it is more difficult to for the technical problem of flaw detection, and then reach without the need for beating
Mill detected object surface, without the need for couplant, you can to realize that high temperature is detected, detected using wide-angle oblique incidence, improve energy
Conversion efficiency and the effect of echo sensitivity.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used to explain this utility model, does not constitute to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the schematic diagram of a kind of optional phased array electromagnetic acoustic device according to this utility model embodiment；And
Fig. 2 is the schematic diagram of the optional phased array electromagnetic acoustic device of another kind according to this utility model embodiment.
Specific embodiment
In order that those skilled in the art more fully understand this utility model scheme, below in conjunction with this utility model reality
The accompanying drawing in example is applied, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of this utility model part, rather than the embodiment of whole.Based on the reality in this utility model
Example is applied, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art is all answered
When the scope for belonging to this utility model protection.
It should be noted that specification and claims of the present utility model and the term " first " in above-mentioned accompanying drawing,
" second " etc. is for distinguishing similar object, without being used to describe specific order or precedence.It should be appreciated that so
The data for using can be exchanged in the appropriate case, so that embodiment of the present utility model described herein can be with except at this
In diagram or describe those beyond order implement.Additionally, term " comprising " and " having " and their any deformation, meaning
Figure is that covering is non-exclusive to be included, and for example, a series of system, product or the equipment for containing units is not necessarily limited to clearly arrange
Those units for going out, but may include other units clearly do not list or intrinsic for these products or equipment.
According to this utility model embodiment, there is provided a kind of embodiment of phased array electromagnetic acoustic device.Need explanation
It is that the phased array electromagnetic acoustic device of the embodiment can be realized carrying out Ultrasonic NDT to detected object.
Fig. 1 is the schematic diagram of a kind of optional phased array electromagnetic acoustic device according to this utility model embodiment, such as Fig. 1
Shown, the phased array electromagnetic acoustic device can include：Signal source 10, passage gate 20 and phased array electromagnetic acoustic are passed
Sensor 30, specifically：
Signal source 10, can be used for producing the pumping signal of predetermined waveform, for example pulse signal, the square wave in some cycles,
The sine wave in some cycles, window function modulation waveform etc..The pumping signal that signal source 10 is produced can be used for encouraging phased array
Excitation electromagnetic ultrasonic transducer 30 produces ultrasound wave.Herein it should be noted that the power of the pumping signal of the generation of signal source 10
More than or equal to threshold value, wherein, threshold value can according to practical application request set or adjust, this utility model embodiment to threshold value not
It is specifically limited.
Passage gate 20, can be connected with signal source 10 and phased array electromagnetic ultrasonic transducer 30.As shown in figure 1,
Passage gate 20 can be connected with phased array electromagnetic ultrasonic transducer 30 by multiple passages, wherein, the number of passage
Can be identical with the element number of array that phased array electromagnetic ultrasonic transducer 30 includes, namely passage correspondence one battle array of connection
Unit.Passage gate 20 is connected by any one passage controlled in multiple passages and can realize that connecting phased array electromagnetism surpasses
The array element corresponding with the passage of the connection in sonic transducer 30.Alternatively, passage gate 20 can be according to set in advance
Excitation, the array element received in rule connection phased array electromagnetic ultrasonic transducer 30, produce ultrasound wave with the array element for encouraging connection,
Wherein, excitation set in advance, reception rule can be set according to the actual requirements or be adjusted, this utility model embodiment pair
Which is not specifically limited.
Phased array electromagnetic ultrasonic transducer 30, can be connected with passage gate 20.Phased array electromagnetic acoustic is sensed
Device 30 can include multiple array elements, each array element one passage of correspondence, and after array element is connected by passage gate 20, array element can
To produce ultrasound wave in the presence of the pumping signal that signal source 10 is produced, after the ultrasonic emitting to detected object, quilt
Detection object can receive the echo in detected object with reflection echo, array element, can be generated using the echo for receiving
And analyze the testing result of detected object.Herein it should be noted that this utility model embodiment is super to phased array electromagnetism
In sonic transducer 30, the number of included array element is not specifically limited.Also, it should be noted that phased array electromagnetic acoustic is passed
The ultrasound wave and the echo for receiving that the excitation of sensor 30 is produced can be compressional wave, or shear wave, or shear wave, two kinds of compressional wave
Pattern.
As a kind of optional embodiment, as shown in Fig. 2 the phased array electromagnetic acoustic device of the embodiment is except including upper
State outside signal source 10 in embodiment, passage gate 20 and phased array electromagnetic ultrasonic transducer 30, can also include：
Hub 40, multi channel signals conditioner 50, multi-channel signal acquiring device 60 and host computer 70, specifically：
Hub 40, can be connected between passage gate 20 and phased array electromagnetic ultrasonic transducer 30, main to use
Connect in passage gate 20 is corresponded to the array element of phased array electromagnetic ultrasonic transducer 30.As shown in Fig. 2 phased array is electric
Each array element in multiple array elements that magnetic sonac 30 includes can be by hub 40 and passage gate 20, many
50 respective channel of channel signal conditioner is connected.Herein it should be noted that the hub 40 in the embodiment is not this reality
With the necessary part of new phased array electromagnetic acoustic device, hub 40 is a kind of alternative embodiment of the present utility model,
As long as passage gate 20, phased array electromagnetic ultrasonic transducer 30, multi channel signals conditioner can be realized in any way
The device of 50 respective channels interconnection can substitute hub 40.
Multi channel signals conditioner 50, can be by hub 40 and 30 respective channel of phased array electromagnetic ultrasonic transducer
Connection, can be used for nursing one's health the echo that phased array electromagnetic ultrasonic transducer 30 is received.Phased array electromagnetic acoustic
After each array element receives echo in sensor 30, echo can be input into the respective channel of multi channel signals conditioner 50.It is optional
Ground, multi channel signals conditioner 50 can include multiple passages, and each passage may each comprise duplexer and signal amplifier, its
In, duplexer can be used for allowing power to pass through less than the signal of above-mentioned threshold value；Signal amplifier can be used for echo-signal
It is amplified, signal amplifier is preferably preamplifier, as shown in Fig. 2 each passage of multi channel signals conditioner 50 is equal
It is made up of duplexer 501 and preamplifier 502.Duplexer 501 can have the function that limit volt passes through, and only allow small-signal to lead to
Cross so that high-power pumping signal during excitation from signal source 10 only has very faint signal to enter preamplifier 502, and
The echo-signal that phased array electromagnetic ultrasonic transducer 30 is received then all can pass through, and protect so as to be formed to preamplifier 502
Shield, and prevent to impact saturation.Preamplifier 502 can be small-signal linear amplifier, can amplify from phased array
Echo-signal of the tens of row electromagnetic ultrasonic transducer 30 to hundreds of microvolt, the signal of the output of preamplifier 502 can be more
Channel signal Acquisition Circuit 60 is effectively collected.
Multi-channel signal acquiring device 60, can be connected with multi channel signals conditioner 50 and host computer 70.Phased array electricity
The echo-signal that each array element is received in magnetic sonac 30 can be input into Jing after the adjustment of multi channel signals conditioner 50 is amplified
To multi channel signals harvester 60.Echo after multi-channel signal acquiring device 60 can be adjusted to multi channel signals conditioner 50 is believed
Number it is acquired, and is sent to host computer, realizes the record of the echo-signal arrived to each channel reception.
Host computer 70, can be connected with signal source 10 and multi-channel signal acquiring device 60, can be used for receiving multichannel
Echo-signal after the adjustment that signal picker 60 is collected, and according to the inspection of the echo signal form detected object after adjustment
Survey result.In addition, host computer 70 can be also used for excitation and output waveform, the control multi channel signals in control signal source 10
Conditioner 50 is carried out processing, controls multi-channel signal acquiring device 60 to the record of echo-signal and according to echo to echo-signal
Detection imaging of signal generation detected object etc..
It should be noted that the detected object in this utility model embodiment can be conductive material, or it is non-
Conductive material.If detected object is non-conducting material, need to increase on the surface of detected object and can encourage generation electromagnetism
The auxiliary device of ultrasound wave, such as using the phased array electromagnetic ultrasonic transducer with Magnetostrictive material piece, and by coupling
Agent is coupled in detected object, or directly sprays conductor material in detected object surface regional area.
Angle of the phased array electromagnetic acoustic device of this utility model embodiment from application, can solve the problem that piezoelectric transducer should
Used time need to polish detected object surface, using couplant, be dfficult to apply to the problem of high temperature detection, electricity can also be solved in addition
Magnetic sonac wide-angle relatively difficult to achieve (more than 35 °) oblique incidence detection, and energy conversion efficiency it is low, echo sensitivity
Difference, it is more difficult to for the problem of flaw detection.From the angle of Method And Principle, phased array electromagnetic acoustic pumping signal transient power reaches kW levels
More than, while each array element width is larger, it is difficult to realized using each interchannel delays time to control using similar piezoelectricity phased array ultra sound
The deflection of acoustic beam, focusing synthesis, the mode of imaging so that the know-why of Conventional piezoelectric phased array ultra sound cannot be applied to electricity
Magnetic ultrasonic phased array.
It should be noted that this utility model can realize following beneficial effect：
1st, this utility model carries out phased array ultra sound detection, tested material surface of need not polishing, uses couplant, just uses
It is applied to be unable to the detection on abrasive material surface, there is rust preventive coating on such as surface and does not allow destruction, when petrochemical equipment is detected
Surrounding has inflammable and explosive medium.Further, since the phased array electromagnetic ultrasonic transducer that this utility model is used, can be used for high temperature
Material tests (up to 780 DEG C).
2nd, ultrasonic weld seam detection actual demand amount is big, generally requires from weld seam both sides and is detected, detection zone be
Sensors sides, acoustic beam need oblique incidence.The oblique deflection angle of electromagnetic acoustic oblique incidence sensor the largest of about 32。, it is more difficult to realize
The deflection of polarizers of big angle scope so that monocoil electromagnetic acoustic oblique incidence sensor is dfficult to apply in weld seam detection.This practicality
The new imaging that can realize detection zone, breaches the little restriction of current single electromagnetic acoustic oblique incidence sensor deflection angle,
The defects detection in larger deflection angle region can be realized, electromagnetic acoustic detection weld seam is solved the problems, such as.
3rd, phased array electromagnetic acoustic pumping signal transient power reaches more than kW levels, while each array element width is larger, it is difficult to
Realize the deflection of acoustic beam, focus on the side of synthesis, imaging using each interchannel delays time to control using similar piezoelectricity phased array ultra sound
Formula so that the know-why of Conventional piezoelectric phased array ultra sound cannot be applied to electromagnetic acoustic phased array.This utility model can be with
The problems referred to above are solved well, realize phased array electromagnetic acoustic detection technique.
Above-mentioned this utility model embodiment sequence number is for illustration only, does not represent the quality of embodiment.In this utility model
Above-described embodiment in, the description to each embodiment all emphasizes particularly on different fields, do not have in certain embodiment describe in detail part, Ke Yican
See the associated description of other embodiment.In several embodiments provided herein, it should be understood that in disclosed technology
Hold, can realize by another way.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (10)
1. a kind of phased array electromagnetic acoustic device, it is characterised in that include：
Signal source, for producing the pumping signal of predetermined waveform, wherein, the power of the pumping signal is more than or equal to threshold value, institute
Pumping signal is stated for encouraging phased array excitation electromagnetic ultrasonic transducer to produce ultrasound wave；
Passage gate, is connected with the signal source and the phased array electromagnetic ultrasonic transducer, described phased for connecting
Array element in array electromagnetic ultrasonic transducer；And
The phased array electromagnetic ultrasonic transducer, is connected with the passage gate, the phased array electromagnetic acoustic sensing
Device includes multiple array elements, after the array element is by passage gate connection, work of the array element in the pumping signal
With it is lower produce ultrasound wave and receive detected object in echo, wherein, the echo be used for generate the detected object
Testing result.
2. device according to claim 1, it is characterised in that the passage gate is for according to excitation set in advance
The array element connected in the phased array electromagnetic ultrasonic transducer with rule.
3. device according to claim 1, it is characterised in that also include：
Hub, is connected between the passage gate and the phased array electromagnetic ultrasonic transducer, for described leading to
Road gate is connected with the array element of the phased array electromagnetic ultrasonic transducer.
4. device according to any one of claim 1 to 3, it is characterised in that also include:
Multi channel signals conditioner, is connected with the phased array electromagnetic ultrasonic transducer, for blocking power more than or equal to institute
The pumping signal for stating threshold value passes through, it is allowed to which the echo that the phased array electromagnetic ultrasonic transducer is received passes through, and right
The echo is amplified process.
5. device according to claim 4, it is characterised in that each passage of multi channel signals conditioner is by duplexer and front
Amplifier composition is put, wherein, the duplexer passes through more than or equal to the pumping signal of the threshold value for blocking power, it is allowed to institute
State the echo that phased array electromagnetic ultrasonic transducer receives to pass through, the preamplifier is for carrying out the echo
Processing and amplifying.
6. device according to claim 4, it is characterised in that also include:
Host computer, is connected with the multi channel signals conditioner, for receiving returning after the multi channel signals conditioner is processed
Ripple, and the testing result of the detected object is generated according to the echo after the process.
7. device according to claim 6, it is characterised in that the host computer is used at least one of：
Control the excitation and output waveform, echo reception record, signal processing, detection imaging of the signal source.
8. device according to claim 6, it is characterised in that also include：
Multi-channel signal acquiring device, is connected with the multi channel signals conditioner and the host computer, respectively for described many
Echo after the process of channel signal conditioner is acquired, and is sent to the host computer.
9. device according to any one of claim 1 to 3, it is characterised in that the ultrasound wave and echo difference
Including at least one of：Shear wave, compressional wave.
10. device according to any one of claim 1 to 3, it is characterised in that the detected object is conductive material
Or non-conducting material, wherein, the detected object surface of non-conducting material is provided with for encouraging the auxiliary for producing ultrasound wave dress
Put.
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| CN201620919281.5U CN206074522U (en) | 2016-08-22 | 2016-08-22 | Phased array electromagnetic acoustic device |
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| CN201620919281.5U CN206074522U (en) | 2016-08-22 | 2016-08-22 | Phased array electromagnetic acoustic device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198742A (en) * | 2016-08-22 | 2016-12-07 | 中国特种设备检测研究院 | Phased array electromagnetic ultrasound method and device |
| CN107219297A (en) * | 2017-07-14 | 2017-09-29 | 西安热工研究院有限公司 | Magnetosensitive phased array probe assembly and method |
| CN107402255A (en) * | 2017-06-22 | 2017-11-28 | 南京琅迪思信息技术有限公司 | A kind of blower fan main shaft surface defect supersonic array on-line detecting system |
| CN110196284A (en) * | 2019-05-21 | 2019-09-03 | 武汉理工大学 | A kind of multifrequency array probe device for large forgings detection |
| CN110974305A (en) * | 2019-12-13 | 2020-04-10 | 山东大学齐鲁医院 | Remote heart ultrasonic three-dimensional imaging system and method based on deep learning |
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2016
- 2016-08-22 CN CN201620919281.5U patent/CN206074522U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106198742A (en) * | 2016-08-22 | 2016-12-07 | 中国特种设备检测研究院 | Phased array electromagnetic ultrasound method and device |
| CN106198742B (en) * | 2016-08-22 | 2019-07-16 | 中国特种设备检测研究院 | Phased array electromagnetic ultrasound method and device |
| CN107402255A (en) * | 2017-06-22 | 2017-11-28 | 南京琅迪思信息技术有限公司 | A kind of blower fan main shaft surface defect supersonic array on-line detecting system |
| CN107402255B (en) * | 2017-06-22 | 2020-01-17 | 南京琅迪思信息技术有限公司 | Ultrasonic array online detection system for surface defects of fan spindle |
| CN107219297A (en) * | 2017-07-14 | 2017-09-29 | 西安热工研究院有限公司 | Magnetosensitive phased array probe assembly and method |
| CN107219297B (en) * | 2017-07-14 | 2023-08-25 | 西安热工研究院有限公司 | Magneto-sensitive phased array detection assembly and method |
| CN110196284A (en) * | 2019-05-21 | 2019-09-03 | 武汉理工大学 | A kind of multifrequency array probe device for large forgings detection |
| CN110974305A (en) * | 2019-12-13 | 2020-04-10 | 山东大学齐鲁医院 | Remote heart ultrasonic three-dimensional imaging system and method based on deep learning |
| CN110974305B (en) * | 2019-12-13 | 2021-04-27 | 山东大学齐鲁医院 | Remote heart ultrasonic three-dimensional imaging system and method based on deep learning |
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